Okay, edit your navbar template.
Scroll down to where it says:
Code:
<if condition="$show['member']">
<td class="vbmenu_control"><a href="login.php?$session[sessionurl]do=logout&logouthash=$bbuserinfo[logouthash]" onclick="return log_out('$vbphrase[sure_you_want_to_log_out]')">$vbphrase[log_out]</a></td>
</if>
Cut that out, DO NOT delete it as you'll be needing it in a minute.
Scroll back up to where the nav buttons bar starts, you'll know it when you see it because it will say:
Code:
<!-- nav buttons bar -->
Paste the segment of code that you cut earlier in between this:
Code:
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="0" border="0" width="100%" align="center" style="border-top-width:0px">
<tr align="center">
and this:
Code:
<if condition="$show['member']">
<td class="vbmenu_control"><a href="usercp.php$session[sessionurl_q]">$vbphrase[user_cp]</a></td>
</if>